he's the president's choice to head up the u.s. treasury but he's haunted by a stint at the wall street bank that received a massive taxpayer bailout and whose investors lost millions. >>> fighting for "lincoln". she's up for oscar number three. tonight, sally field tells us about her fight to play the president's wife. >> keep it right here, america. "nightline" is back in just 60 seconds. >>> from new york city, this is "nightline" with cynthia mcfadden. >> good evening, and thanks for joining us. tonight, a four-day pleasure cruise turned hellish ordeal. 4,200 people are being towed back to shore tonight trapped aboard the carnival cruise ship that lost power in the gulf of mexico sunday. the passengers onboard describe nightmarish scenes of squalor. >> reporter: tonight, stranded at sea. as seen today from above, the carnival triumph being towed to port in mobile, alabama. it is day four of what has turned into the holiday from hell for the more than 4,000 people onboard. bethany is aboard, they spoke briefly before the phone c